/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/terminator_03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 21:46:33,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 21:46:33,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 21:46:33,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 21:46:33,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 21:46:33,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 21:46:33,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 21:46:33,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 21:46:33,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 21:46:33,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 21:46:33,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 21:46:33,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 21:46:33,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 21:46:33,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 21:46:33,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 21:46:33,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 21:46:33,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 21:46:33,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 21:46:33,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 21:46:33,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 21:46:33,485 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 21:46:33,504 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 21:46:33,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 21:46:33,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 21:46:33,509 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 21:46:33,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 21:46:33,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 21:46:33,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 21:46:33,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 21:46:33,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 21:46:33,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 21:46:33,511 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 21:46:33,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 21:46:33,512 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 21:46:33,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 21:46:33,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 21:46:33,513 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 21:46:33,513 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 21:46:33,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 21:46:33,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:46:33,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 21:46:33,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 21:46:33,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 21:46:33,514 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 21:46:33,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 21:46:33,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 21:46:33,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 21:46:33,924 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 21:46:33,924 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 21:46:33,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_03-1.c [2020-10-23 21:46:33,999 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3087ccacb/9bccc0b12dfc42debbca639684edc6ad/FLAG5108b0063 [2020-10-23 21:46:34,651 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 21:46:34,652 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_03-1.c [2020-10-23 21:46:34,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3087ccacb/9bccc0b12dfc42debbca639684edc6ad/FLAG5108b0063 [2020-10-23 21:46:35,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3087ccacb/9bccc0b12dfc42debbca639684edc6ad [2020-10-23 21:46:35,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 21:46:35,030 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 21:46:35,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 21:46:35,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 21:46:35,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 21:46:35,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:46:35" (1/1) ... [2020-10-23 21:46:35,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@126272a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:35, skipping insertion in model container [2020-10-23 21:46:35,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:46:35" (1/1) ... [2020-10-23 21:46:35,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 21:46:35,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 21:46:35,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:46:35,243 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 21:46:35,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:46:35,278 INFO L208 MainTranslator]: Completed translation [2020-10-23 21:46:35,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:35 WrapperNode [2020-10-23 21:46:35,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 21:46:35,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 21:46:35,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 21:46:35,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 21:46:35,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:35" (1/1) ... [2020-10-23 21:46:35,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:35" (1/1) ... [2020-10-23 21:46:35,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:35" (1/1) ... [2020-10-23 21:46:35,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:35" (1/1) ... [2020-10-23 21:46:35,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:35" (1/1) ... [2020-10-23 21:46:35,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:35" (1/1) ... [2020-10-23 21:46:35,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:35" (1/1) ... [2020-10-23 21:46:35,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 21:46:35,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 21:46:35,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 21:46:35,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 21:46:35,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:46:35,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 21:46:35,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 21:46:35,409 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 21:46:35,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 21:46:35,410 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 21:46:35,410 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 21:46:35,411 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 21:46:35,411 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 21:46:35,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 21:46:35,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 21:46:35,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 21:46:35,412 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 21:46:35,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 21:46:35,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 21:46:35,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 21:46:35,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 21:46:35,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 21:46:35,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 21:46:35,969 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 21:46:35,969 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 21:46:35,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:46:35 BoogieIcfgContainer [2020-10-23 21:46:35,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 21:46:35,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 21:46:35,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 21:46:35,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 21:46:35,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:46:35" (1/3) ... [2020-10-23 21:46:35,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79323894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:46:35, skipping insertion in model container [2020-10-23 21:46:35,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:35" (2/3) ... [2020-10-23 21:46:35,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79323894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:46:35, skipping insertion in model container [2020-10-23 21:46:35,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:46:35" (3/3) ... [2020-10-23 21:46:35,989 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_03-1.c [2020-10-23 21:46:36,002 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 21:46:36,008 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 21:46:36,024 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 21:46:36,063 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 21:46:36,063 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 21:46:36,063 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 21:46:36,063 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 21:46:36,063 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 21:46:36,064 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 21:46:36,064 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 21:46:36,064 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 21:46:36,087 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-23 21:46:36,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-23 21:46:36,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:46:36,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 21:46:36,109 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:46:36,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:46:36,121 INFO L82 PathProgramCache]: Analyzing trace with hash 393158515, now seen corresponding path program 1 times [2020-10-23 21:46:36,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:46:36,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481862131] [2020-10-23 21:46:36,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:46:36,250 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:46:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:46:36,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:46:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:46:36,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 21:46:36,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481862131] [2020-10-23 21:46:36,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:46:36,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 21:46:36,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829503395] [2020-10-23 21:46:36,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 21:46:36,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:46:36,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 21:46:36,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 21:46:36,584 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 6 states. [2020-10-23 21:46:37,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:46:37,080 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2020-10-23 21:46:37,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 21:46:37,082 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-23 21:46:37,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:46:37,091 INFO L225 Difference]: With dead ends: 58 [2020-10-23 21:46:37,091 INFO L226 Difference]: Without dead ends: 27 [2020-10-23 21:46:37,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-23 21:46:37,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-23 21:46:37,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-23 21:46:37,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-23 21:46:37,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-10-23 21:46:37,144 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2020-10-23 21:46:37,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:46:37,145 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-10-23 21:46:37,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 21:46:37,145 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-10-23 21:46:37,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-23 21:46:37,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:46:37,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 21:46:37,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 21:46:37,149 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:46:37,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:46:37,150 INFO L82 PathProgramCache]: Analyzing trace with hash -2145232922, now seen corresponding path program 1 times [2020-10-23 21:46:37,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:46:37,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243061754] [2020-10-23 21:46:37,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:46:37,161 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:46:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:46:37,216 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:46:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:46:37,261 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:46:37,290 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 21:46:37,290 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 21:46:37,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 21:46:37,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:46:37 BoogieIcfgContainer [2020-10-23 21:46:37,306 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 21:46:37,308 INFO L168 Benchmark]: Toolchain (without parser) took 2282.31 ms. Allocated memory is still 159.4 MB. Free memory was 135.3 MB in the beginning and 81.1 MB in the end (delta: 54.2 MB). Peak memory consumption was 55.4 MB. Max. memory is 8.0 GB. [2020-10-23 21:46:37,309 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 159.4 MB. Free memory is still 132.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:46:37,310 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.63 ms. Allocated memory is still 159.4 MB. Free memory was 134.7 MB in the beginning and 125.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-23 21:46:37,311 INFO L168 Benchmark]: Boogie Preprocessor took 38.42 ms. Allocated memory is still 159.4 MB. Free memory was 125.6 MB in the beginning and 124.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 21:46:37,312 INFO L168 Benchmark]: RCFGBuilder took 656.78 ms. Allocated memory is still 159.4 MB. Free memory was 124.1 MB in the beginning and 111.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-23 21:46:37,313 INFO L168 Benchmark]: TraceAbstraction took 1326.35 ms. Allocated memory is still 159.4 MB. Free memory was 110.7 MB in the beginning and 81.1 MB in the end (delta: 29.6 MB). Peak memory consumption was 30.2 MB. Max. memory is 8.0 GB. [2020-10-23 21:46:37,317 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 159.4 MB. Free memory is still 132.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 246.63 ms. Allocated memory is still 159.4 MB. Free memory was 134.7 MB in the beginning and 125.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.42 ms. Allocated memory is still 159.4 MB. Free memory was 125.6 MB in the beginning and 124.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 656.78 ms. Allocated memory is still 159.4 MB. Free memory was 124.1 MB in the beginning and 111.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1326.35 ms. Allocated memory is still 159.4 MB. Free memory was 110.7 MB in the beginning and 81.1 MB in the end (delta: 29.6 MB). Peak memory consumption was 30.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] int x=__VERIFIER_nondet_int(); [L16] int y=__VERIFIER_nondet_int(); [L18] COND TRUE y>0 [L20] COND FALSE !(x<100) [L25] CALL __VERIFIER_assert(y<=0 || (y<0 && x>=100)) [L6] COND TRUE !(cond) [L7] CALL reach_error() [L3] __assert_fail("0", "terminator_03-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 31 SDslu, 51 SDs, 0 SdLazy, 69 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...